691 (number)

691 is an odd 3-digits prime number following 690 and preceding 692. In scientific notation, it is written as 6.91 × 10^2. The sum of its digits is 16. It has a total of 1 prime factors and 2 positive divisors. There are 690 positive integers (up to 691) that are relatively prime to 691.

Interesting facts

Basic properties

Name

Name six hundred ninety-one

Notation

Scientific notation 6.91 × 10^2
Engineering notation 6.91 × 10^0

Prime Factorization of 691

Prime Factorization 691

Composite number
ω Distinct Factors 1
Total number of distinct prime factors
Ω Total Factors 1
Total number of prime factors
rad Radical 691
Product of the distinct prime numbers

The prime factorization of 691 is 691. Since it has a total of 1 prime factors.

Most popular turbo-numbers

Basic calculations (n = 691)

Multiplication

n×y
n×2 1382
n×3 2073
n×4 2764
n×5 3455

Division

n÷y
n÷2 345.5
n÷3 230.33333333333
n÷3 172.75
n÷5 138.2

Exponentiation

ny
n2 477481
n3 329939371
n4 227988105361
n5 157539780804451

Nth Root

y√n
2√n 26.28687885619
3√n 8.8408227294029
4√n 5.1270731276421
5√n 3.6973929557843

Divisors of 691

1, 691

2 divisors

τ Total Divisors 2
Total number of the positive divisors of n
σ Sum of Divisors 692
Sum of all the positive divisors of n
s Aliquot Sum 1
Sum of the proper positive divisors of n
A Arithmetic Mean 346
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 26.305892875932
Returns the nth root of the product of n divisors
H Harmonic Mean 1.9971098265896
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 691 can be divided by 2 positive divisors. The sum of these divisors (counting 691) is 692, the average is 346.

Base conversion 691

Base System Value
2 Binary 1010110011
3 Ternary 221121
4 Quaternary 22303
5 Quinary 10231
6 Senary 3111
8 Octal 1263
10 Decimal 691
12 Duodecimal 497
16 Hexadecimal 2b3
20 Vigesimal 1eb
36 Base36 j7

Cryptographic Hash Functions

md5 10a5ab2db37feedfdeaab192ead4ac0e
sha1 3da7e2c2144502d7115bee98a0dfe95030345b43
sha256 809e63d5c8aa03af112d17361058d0d8955f6d8e1e7591487d593dad276f9757
sha512 63d6c2f0dc431a56725667829dc104a66dee682543bd24bc23b63d559030857791befc2ec34dfe08c0e48543283249e974d3772e1ecd7e4470cd67c319a32eaa
ripemd-160 7cbbbf991f508d9c54fb7304f6052d6c337f0cea

691 as geometric shapes

Circle

Radius = n
Diameter 1382
Circumference 4341.6810472611
Area 1500050.8018287

Sphere

Radius = n
Volume 1382046805.4182
Surface area 6000203.2073148
Circumference 4341.6810472611

Square

Length = n
Perimeter 2764
Area 477481
Diagonal 977.22157159981

Cube

Length = n
Surface area 2864886
Volume 329939371
Space diagonal 1196.8471080301

Equilateral Triangle

Length = n
Perimeter 2073
Area 206755.3379122
Altitude 598.42355401505

Triangular Pyramid

Length = n
Surface area 206755.3379122
Volume 38883727.769087
Height 325.7405238666